Analog Particle Production Model for General Classes of Taub-NUT Black Holes

Foo, Joshua; Good, Michael R. R.; Mann, Robert B.

doi:10.3390/universe7090350

Cited by 7 publications

(8 citation statements)

References 57 publications

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“…In a very recent paper, Foo et al [36] proposed to study the Hawking radiation in a different way, which is somewhat similar to the Unruh effect [37]. They [36] investigated an accelerated boundary correspondence which mimics the outgoing Hawking radiation produced by a general class of Taub-NUT BHs. It has been shown [36] that if a BH contains the GMM (n) along with the regular matter, the particle production is suppressed by the GMM.…”

Section: Evaporation Of Taub-nut Pbhsmentioning

confidence: 99%

“…They [36] investigated an accelerated boundary correspondence which mimics the outgoing Hawking radiation produced by a general class of Taub-NUT BHs. It has been shown [36] that if a BH contains the GMM (n) along with the regular matter, the particle production is suppressed by the GMM. Considering the particle spectrum of the frequencies of the outgoing and incoming modes ω and ω ′ respectively, Foo et al [36] showed that the particle number decays to zero for large values of n (i.e., n close to 1 in G = c = M = 1 unit) for both the regimes: ω ∼ ω ′ and ω << ω ′ .…”

Section: Evaporation Of Taub-nut Pbhsmentioning

confidence: 99%

“…It has been shown [36] that if a BH contains the GMM (n) along with the regular matter, the particle production is suppressed by the GMM. Considering the particle spectrum of the frequencies of the outgoing and incoming modes ω and ω ′ respectively, Foo et al [36] showed that the particle number decays to zero for large values of n (i.e., n close to 1 in G = c = M = 1 unit) for both the regimes: ω ∼ ω ′ and ω << ω ′ . The particle number also vanishes in the limit of small n (i.e., n close to 0 in G = c = M = 1 unit).…”

Section: Evaporation Of Taub-nut Pbhsmentioning

confidence: 99%

“…Fig. A5 (a) of [36] exhibits that the particle number in the peak value is proportional to the ordinary mass M of BH. Thus, if the ordinary mass decreases, the particle number in the peak also decreases.…”

Section: Evaporation Of Taub-nut Pbhsmentioning

confidence: 99%

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Primordial Black Holes having Gravitomagnetic Monopole

Chakraborty¹,

Bhattacharyya²

2022

Preprint

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A primordial black hole (PBH) is thought to be made of the regular matter or ordinary mass (M ) only, and hence could have already been decayed due to the Hawking radiation if its initial ordinary mass were 5 × 10 11 kg. Here, we study the role of gravitomagnetic monopole for the evaporation of PBHs, and propose that the lower energy PBHs (equivalent to ordinary mass M << 5 × 10 11 kg) could still exist in our present Universe, if it has gravitomagnetic monopole. If a PBH was initially made of both regular matter and gravitomagnetic monopole, the regular matter could decay away due to the Hawking radiation. The remnant gravitomagnetic monopole might not entirely decay, which could still be found as a PBH in the form of the pseudo 'mass-energy'. If a PBH with M 5 × 10 11 kg is detected, one may not be able to conclude if it has gravitomagnetic monopole. But, a plausible detection of a relatively low energy (equivalent to 2.176 × 10 −8 kg < M 5 × 10 11 kg) PBH in future may imply the existence of a gravitomagnetic monopole PBH, which may or may not contain the ordinary mass.

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Section: Evaporation Of Taub-nut Pbhsmentioning

confidence: 99%

Section: Evaporation Of Taub-nut Pbhsmentioning

confidence: 99%

Section: Evaporation Of Taub-nut Pbhsmentioning

confidence: 99%

Section: Evaporation Of Taub-nut Pbhsmentioning

confidence: 99%

See 2 more Smart Citations

Primordial Black Holes having Gravitomagnetic Monopole

Chakraborty¹,

Bhattacharyya²

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…There have been a number of studies that relate different specific black hole models (e.g., the Schwarzschild [ 21 , 22 , 23 , 24 ] case) and their analog moving mirrors, including the extremal Reissner–Nordström (RN) [ 25 , 26 ], extremal Kerr [ 27 ], RN [ 28 ], Taub-NUT [ 29 ] and Kerr [ 30 ] black holes. In addition, de Sitter and anti-de Sitter cosmologies [ 31 ] are also modeled by moving mirror trajectories.…”

Section: Introductionmentioning

confidence: 99%

CGHS Black Hole Analog Moving Mirror and Its Relativistic Quantum Information as Radiation Reaction

Myrzakul

Xiong

Good

2021

Entropy

Self Cite

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The Callan–Giddings–Harvey–Strominger black hole has a spectrum and temperature that correspond to an accelerated reflecting boundary condition in flat spacetime. The beta coefficients are identical to a moving mirror model, where the acceleration is exponential in laboratory time. The center of the black hole is modeled by the perfectly reflecting regularity condition that red-shifts the field modes, which is the source of the particle creation. In addition to computing the energy flux, we find the corresponding moving mirror parameter associated with the black hole mass and the cosmological constant in the gravitational analog system. Generalized to any mirror trajectory, we derive the self-force (Lorentz–Abraham–Dirac), consistently, expressing it and the Larmor power in connection with entanglement entropy, inviting an interpretation of acceleration radiation in terms of information flow. The mirror self-force and radiative power are applied to the particular CGHS black hole analog moving mirror, which reveals the physics of information at the horizon during asymptotic approach to thermal equilibrium.

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On the duality of Schwarzschild–de Sitter spacetime and moving mirror

Fernández-Silvestre

Foo

Good

2022

Class. Quantum Grav.

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The Schwarzschild-de Sitter (SdS) metric is the simplest spacetime solution in general relativity with both a black hole event horizon and a cosmological event horizon. Since the Schwarzschild metric is the most simple solution of Einstein's equations with spherical symmetry and the de Sitter metric is the most simple solution of Einstein's equations with a positive cosmological constant, the combination in the SdS metric defines an appropriate background geometry for semi-classical investigation of Hawking radiation with respect to past and future horizons. Generally, the black hole temperature is larger than that of the cosmological horizon, so there is heat flow from the smaller black hole horizon to the larger cosmological horizon, despite questions concerning the definition of the relative temperature of the black hole without a measurement by an observer sitting in an asymptotically flat spacetime. Here we investigate the accelerating boundary correspondence (ABC) of the radiation in SdS spacetime without such a problem. We have solved for the boundary dynamics, energy flux and asymptotic particle spectrum. The distribution of particles is globally non-thermal while asymptotically the radiation reaches equilibrium.

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Analog Particle Production Model for General Classes of Taub-NUT Black Holes

Cited by 7 publications

References 57 publications

Primordial Black Holes having Gravitomagnetic Monopole

Primordial Black Holes having Gravitomagnetic Monopole

CGHS Black Hole Analog Moving Mirror and Its Relativistic Quantum Information as Radiation Reaction

On the duality of Schwarzschild–de Sitter spacetime and moving mirror

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